Tamper



Oct. 28, 1930.

C. JACKSON TAMPER Filed Feb. 23,. 1929 INVENTOR WW/H Ja /fjvri M Patentedl O ct. 1930 UNITED STATES CORWILL JACKSON, OF CHICAGO, ILLINOIS TAMLPER Application led February 23, 1929. Serial No. 342,022.

The main objects of this linvention are: First, to providea tamper which is well adapted for" the tamping of gravel, cinders and other materials commonly designated in railway parlance' as light ballast.

Second, to provide a tamper adapted for such materials which is of very large capacity and highly ellicient in the tamping of ballast on the underside of the ties.

Third, to provide a tamper having these advantages which is of very large capacity.

Objects relating to details and economies of `my invention will appear from the description to follow. rIhe invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. '1 is a perspective view of my improved tamper.

F ig. 2 is a fragmentary view illustrating the manipulation thereof in tamping a railway tie.

Fig. 3 is a perspective view of the tamper blade or blade-like tool of my improved tamper. Fig. 4 is a perspective view of the tool no se piece or tip. 3" In the accompanying drawing, l represents a railway tie and 2 the ballasting material.

My improved tamper comprises a vibrating unit which in the embodiment illustrated consists of a motor casing 3 in which the rotor of an electric motor is indicated at 4. The shaft 5 of this rotor is provided with an unbalancing weight 6 so that as theshaft is rotated high speed vibrations are set up in the casgThe tool holder in the embodiment illustrated consists of a pair of flat plates 7 and 8 between which the flat blade-like tool 9 is clamped by means of bolts 10 arranged through the tool holder plates 7 and 8 andthe or channel 12 adapted to receive the end of the blade, being secured thereto by rivets 134 arranged through holes in the bottom arm 14 of the nose piece and the blade.

The handle 15 is secured tothe casing 3 through a resilient connection designated generally by the numeral 16, this handle having a bar-like hand piece 17. As the details of this resilientV connection form no part of the present invention they are not illustrated herein.

My improved tamper is especially desirable, as stated, for use in tamping light ballast such as gravel, cinders and the like as distinguished from crushed rock. .The wide blade serves as a guide for material to be tamped so that it will flow down the upper side of the blade and is guided thereby under a tie. By making the blade relatively thin, it vibrates transversely, as stated, facilitating this movement of the material to a position down the blade and also working it under a tie or other object being ballasted.

I have illustrated and described my improvements in an embodiment which I have found highly satisfactory.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a tamper, the combination of a motor casing, a motor housed within said casing and provided with a shaft having an unbalancing weight, a handle having a flexible connection to one end of said casing, a tool holder rigidly mounted on the other end of said casing, an upwardly tapered resilient blade of substantial width mounted in said tool holder, and a detachable blade tip of substantially greaterthickness than the blade and having its forward edge inclined in both directions from a central point.

2. In a tamper, the combination of a motor casing, a motor housed within said casing and provided with a shaft having an unbalancing weight, a handle having a flexible connection to one end of said casing, a tool holder rigidly mounted on the other end of said casing, a relatively wide thin resilient blade mounted in said tool holder, and a blade tip of substantially greater thickness than the blade. v

3. In a tamper, the combination of a motor casing, a motor housed within said casing and provided with a shaft having an unbalancing weight, a handle having a flexible connection to one end of said casing, a tool holder rigidly mounted on the other end of said casing, and a relatively wide thin resilient tool mounted in said tool holder.

4. In a tamper, the combination of a motor casing, a motor housed within said casing and provided`with a shaft having an un'- balancing weight, a handle having a flexible connection to said casing, and a relatively wide thin resilient tool mounted on said casing so that it receives the impact of the vibrations of the casing, said blade being provided with a tip of substantially greater thickness than the blade. Y

5. In a tamper, the combination of a motor casing, a motor housed within said casing and provided with a shaft having an unbalancing weight, a handle having a exible connection to said casing, and a relatively wide and thin tool mounted on said casing so that it receives the impact of the vibrations of the casing.

6. In a tamper, the combination with a vibrating unit including a casing, of a handle having a flexible`connection to said casing, a resilient blade-like tool connected to said casing, and a blade tip of substantially greater thickness than said blade having its forward edge inclined in both directions from a central oint.

7. n-a tamper, the combination with a vibrating unit including a casing, of a handle having a flexible connection to said casing, a relatively wide and thin blade connected to said casing, and a blade tip of substantially greater thickness than said blade.

8. In a tamper, the combination with a vibrating unit including a. casing, of a handle having a resilient connection to said casing, and a relatively wide and thin tool connected to said casing.

9. In a tamper, the combination with a vibrating unit provided with a handle, afre- 4 silient blade-like tool rigidly connected to 4said vibrating unit, Iand a detachable blade ti of substantially greater thickness than said blade.

10. In a tamper, the combination with a vibrating unit provided with a handle, and a casing, a relatively wide thin blade of resilient material mounted on said casing, and a blade tip of substantially greater thickness than the blade having its forward edge inclined in both directions from a central point.

In witness whereof I have hereunto set my hand.

CORWILL JACKSON.

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